There are several things you can do to save your battery.  If this is your first smart phone, you need to get used to it being a 'battery eater', as all smart phones are to some degree.

Heres the link (it's the word 'download' at the very bottom of the page) to download the Lucid user's guide (see pages 22-23):

http://www.pdfuu.com/verizon-lg-lucid-manual-user-guide-in-english-and-spanish.html